5sfTe cutting out wot Options

[fastassrolla]

I don't know what it is... I installed a boost controller and turned it down to 5psi and it still cuts out.. only under wide open throttle. If I keep the pedal pressed at 50% it builds boost and accelerates quickly... But any more than that and it sputters and cuts out. Any idea guys?

[batcavee00]

i got a 5s turbo also, im using a safc2, 460 injectors, walbro 255, and a wideband o2.

quick question, do you know if your map sensor is a 2 bar map? cause if its the stock sensor i hear they fall on their face around 5psi.... another thing you might wanna look into is checking the spark plug gap i read that is must be 0.30" cause you might get detonation around 5psi or so.....


also, i had a similar issue with my car when i was tuning i would be building boost like 2 or 3 psi and then the car would stutter a bit, i noticed that my afr around the stuttering was really lean. and no matter how much fuel i added around that rpm it would stay lean, but at WOT i was having no issues only at part throttle. i got around that issue by disconnecting my primary o2 sensor.......my afr are a little better now.


but definitely get your self a wideband, and check your injectors......